Rotary engine.



A. N. BLAZER.

ROTARY ENGINE. APPLICATION FILED NOV. 15, 1906. nnunwnn FEB. 10, 1909.

Patented Mar. 23, 1909.

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INVENTOH (7'1. 1 I3 I1 V 07261 JKB Zazer By WWI/ 60 ATTORNEYS WITNESSES WCLM A. N. BLAZER. ROTARY ENGINE.

APPLIOATION TILED NOV. 15, 1906. RENEWED FEB. 10, 1909.

Patented Mar. 23, 1909.

2 SHEETS-SHEET 2.

INVENTOH ,3 Zmer/VBZcZZer mm/ufo ATTORNEYS m S 8 M W W which will be more fully described hereinresponding parts in all the views.

- of the same on the line 22 of Fig. 1. Fig. 3

gine illustrated in Figs. 1, 2 and 3 is provided with the bores A A intersecting each other screwed or otherwise secured in the heads I 0 A A of the cylinderA. The pistons B ,B are iize the steam expansively and to run-at a end view of the same; Fig. 6 is a. transverse UNITED STATES PATENT OFFICE.

ALMER'NEWTON- BLAZER, OF MESOALERO, TERRITORY OF NEW MEXICO, ASSIGNOR TO BLAZER SPIRAL ENGINE COMPANY, OF MESOALERO, TERRITORY OF NEW MEXICO, A'CORPORATION OF THE TERRITORY OF NEW MEXICO.

ROTARY ENGINE.

I Application filed November 15, 1906, Serial No..843,606. Renewed February 10, 1909. Serial No. $77,216.

To all whom it may concern:

Be it known that I, ALMER NEWTON BLA- ZER, a citizen of the United States, and a resident of Mescalero, in the county of Otero and Territory of New Mexico, have invented a new and Im roved Rotary Engine, of which the following is a full, clear, and exact 1 description. I

The invention relates to rotary engines such as shown and described in the Letters Patent of the United States, No. 612,304, granted to me October 11, 1898.

The object of the present invention is to provide a new and improved rotary engine- 'arranged to take up very little space, to utilvery high speed, so as to be specially adapted fordriving automobiles and other-machinery.

The invention consists of novel features and parts and combinations of the same,

after and then pointedout in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate cor- Figure 1 is a longitudinal sectional side elevation of the improvement on the line 11 of Fig. 3 Fig. '2 is a sectional plan view is a transverse section of the same on the line 3-3 of Fig. 1; Fig. 4 is a plan view of one of the sleeves for centering a piston; Fig 5 is an section ofthe same on the line 66 of Fig. 4; Fig. 7 is a sectional plan view of a modified form of the improvement, and Fig. 8 is an enlarged cross section of the piston head showing more particularly its cycloid form.

The cylinder A of the improved rotary enin a'longitudinal direction, as plainly indicated in Fig. 3, and in the said bores are mounted to turn the pistons B and B secured by keys C or other fastening devices to the shafts D and D journaled in bushings E connected with each other by gear wheels G, G for rotating the pistons B, B and shafts D, D in unison with each other, and one of the said shafts as shown, the shaft D, is ex- 1 3 the corrcs1')onding tended at one or both ends for connection is provided in its hub with a centering sleeve H ta ering from the middle to the ends and snug y fitting the corresponding shaft D or D, the sleeve bein split for the )assage of Key C, as will e readily understood by reference to Figs. 4, 5 and'o.

Each of the pistons B and B is provided on its peripheral face with two spiral piston heads B forming corresponding spiral grooves B, and the spiral piston heads B of one piston fit into and run in the spiral grooves B of the other piston. The gear wheels G and G are arranged between the inner ends of the piston heads B of the corresponding piston B or B, it bein understood that the two pistons of eac piston head run or wind in opposite directions, as rlvill be readilyunderstood by reference to fig. 1. I

A steam chest :I is formed or arranged on the cylinder A adjacent to the contact of the,

two pistons B and B (as illustrated in Fig. 3) at the middle of the cylinder A, so that the steam can pass simultaneously into the corresponding grooves B of the pistons B and B, to travel in both directions, that is, from the middle of each piston toward the ends thereof. The exhaust steam asses from the ends of the pistons B and into exhaust chambers J formed in the cylinder heads A A and the exhaust steam is conducted from the chambers J by exhaust pipes J to a suitable place of discharge.

As shown in Figsl and 2 each of the bores A, A is in the form of two 'frusta of cones connected at their small ends, and the pistons B and B are correspondingly shaped, and

steam from the corresponding groove during one-half revolution of a piston, and the steam passing into the groove during the other half revolution is confined in one con- Patented March 23, 1909.

piston head at the inner end cuts off the 7 piston,

volution thereof and is then cut ofi by the meshing of the piston head of the other and consequently the steam is used expansively, first from the cut-off at the steam chest I at one-half revolutionto the full area of the groove when the revolution is com leted and then in the groove at the next revo ution. It is apparent that the iston heads and grooves may be arrange combined .in any desired proportions, and thereby the expansion be made as abrupt or as gradual as desired by the addition of more convolutions to the splral pistons, giving ad-v ditional expansion to any desired extent.

The contact. faces of the piston heads B are cut to a true cycloid. form, as illustrated in Fig. 8, to insure a proper meshing of the piston heads of the two PIStODS WIth the corresponding grooves, to prevent leakage and to allow the steam to properly act on the side walls of the piston heads with a view to rotate the pistons with the full power of the steam and without loss or waste thereof.

In the engine illustrated in Fig. 7, the cylinder A has its bores of cylindrical shape, and the pistons B, B are correspondingly shaped, and the gear wheels G- and G are omitted, for, in order to insure the proper running of the pistons B and B in unison, I

provide the shafts D, D at their outer ends with gear wheels K, K in mesh with each other. The steam chest I delivers steam to the s iral grooves of the pistons B, B at the mid e thereof, the same as above described in reference to Figs. 1, 2 and 3, and the steam is cut off in the same manner and hence used expansively, as previously explained relative to the engine shown in Figs. 1, 2 and 3,

so that further description of this part of the invention is not deemed necessary.

Having described my invention, I claim as new and desire to secure by Letters Patent:

1. A rotary en e havin a c linder rovided with inters iz t ing bore s, shifts moiinted to turn in said cylinders, pistons each provided in its hub with a centering sleeve tapering from. the middle to the end and fitting the corresponding shaft, the said istons being mounted to turn in unison witiiin the said boresand formed on their peri heries with spiral piston-heads, in mesh wit each other, and means for introducing the motive agent into the spiral grooves formed by the piston-heads at a point ap roximate y at the middle of the len th of t e pistons.

2. A rotary engine avmg a cylinder provided with intersectin bores, shafts mounted to turn in the cylin ei' heads, pistons each provided in its hub with a centering sleeve tapering from the middle to the end and fitting the corresponding shaft, the said pistons" being mounted to turn in unison in the said bores and, provided at theirperiphi cries with spiral piston-heads of cyclo dal and I erases form the piston-head of one iston running in :he spiral groove formed y the piston head on the other piston, and a steam-chest for supplying steam to the spiral grooves in the istons at a point ap roximately at the middle of the length of t 1e pistons.

3. A rotary engine having a cylinder provided with intersecting bores, pistons mounted to turn in the said bores and having spiral piston-heads, and spiral grooves formed by the said heads, the spiral piston-head of one piston running in t e spiral groove of the other piston, and the sald piston-heads and gr oves increasing in size from the middle of the pistons to the ends thereof.

4.- A rotary engine having a cylinder provided with intersecting bores, pistons mounted to turn in the said bores and having spiral piston-heads, spiral grooves formed by the said heads, the spiral piston-head of one piston running in the s iial groove of the other piston, and the-said piston-heads and grooves increasing in size from the middle of the pistons to the ends thereof, and a steamchest in the said cylinder, at the middle of the said pistons.

5. A rotary engine having a cylinder provided with intersecting bores, pistons mounted toturn in the said bores and each having two spiral piston-heads and s iral grooves formed by the said piston-hea s, the latter and the said grooves running in opposite directions from the middle of the pistons to the ends thereof, the peripheral faces of the two pistons an aging each other at the intersection of the ores of the cylinder, and the piston-heads of one piston running in the rooves of the other piston, a steam-chest in the said cylinder, at the middle of the said pistons, the cylinder heads having exhaust chambers formed therein at opposite ends of the pistons, and into which the exhaust steam passes from the ends of the pistons, and exhaust pipes leading from said exhaust chambers.

6. A rotary engine having a cylinder provided with intersecting bores, pistons mounted to turn in the said bores and each having on its peripheral face two spiral piston-heads and spiral grooves formed by the said pistonheads, the latter and the said grooves running in opposite directions from the middle ft e pistons to the ends thereof, the pistonheads of one piston engaging the grooves of the other piston at the intersection of the cylinder bores, a steam-chest in the said cyl inder, at the middle of the said pistons, the cylinder bein provided. with heads having exhaust cbarn ers formed therein at opposite ends of the pistons and into-which the exhaust steam passes from the ends of the pistons, exhaust pipes leading from said exhaust chambers, and a gearing for gearing he said pistons together.

7. A rotary engine having a cylinder provided with intersectin the ends thereof, the piston-heads of one piston running in the grooves of the other piston, the said piston-heads and grooves Increasing in size from the huddle of the pistons to the ends thereof, and a steamchestin the said cylinder, at the middle of V the said pistons.

8; In a rotary engine, a cylinder provided with intersecting bores, shafts mounted to turn in bushings secured to the cylinder heads,- pistons eachprovided in its hub with acentering sleeve tapering from the middle to the end andfitting the corresponding shaft, the said sleeves being each split for the passage of a key for securing the piston to the shaft.

9. A rotary engine having a cylinder provided with intersectin bores, pistons mounted to turn in the sai bores and each having two s iral piston-heads and spiral grooves formed iiv the said piston-heads, the latter and the said grooves running in opposite directions i'rom the middle of the pistons to tlieends thereof, the piston-heads of'one piston running in the grooves of the other pistonp the said bores and the said [pistons being in the form of frusta of cones and the said piston-heads and rooves increasing in. depth from the mi dlfe of the pistons to the ends thereof, and a steam chest in the said cylinder, at the middle of the said pistons.

10, A rotary engine having a cylinder provided with intersectin bores, pistons mounted to turn in the said bores and each having two, spiral piston-heads and spiral grooves formed by the said piston-heads, the latter and the said grooves running in opposite directions from the middle of the pistons to the ends thereof, the piston-heads of one piston running in the grooves of the other piston, gear-wheels in mesh with each other and secured to the said istons, between the adjacent inner ends 0 the istonheads, and a steam-chest in the said cy inder, atthc middle of the said istons.

11. A rotary engine," aving -a cylinder provided with intersecting bores, pistons mounted to turn in the saidbores and each comprisin two members bolted together,

with a spiral iston head, and a spiral groove formed by t c said head, the peripheral faces of the pistons contacting with each other at the intersection of the c linder bores, the piston heads of the mem ers of one piston runnjn in the spiral grooves of the members of t e other piston, the said piston heads andgrooves of the members of each piston running in opposite directions from the inner to the outer ends of said members, the said cylinder having outwardly convexed heads provided with extended bearings in which the shafts of the pistons are mounted to turn, the said convexed heads forming with the pistons exhaust chambers provided with outlets, a steam chest on said cylinder at' the middle thereof adjacent to the oint of contact of the pistons, and means or rotating the istons and shafts in unison with each 0t er.

In testimony whereof I havesigned my name to this specification in the presence 

